DE19842076A1 - Cable system for underground high current cable has thermally insulating cable casing over at least part of cable run, and loss heat is carried away beneath casing by convection or forced cooling - Google Patents
Cable system for underground high current cable has thermally insulating cable casing over at least part of cable run, and loss heat is carried away beneath casing by convection or forced coolingInfo
- Publication number
- DE19842076A1 DE19842076A1 DE1998142076 DE19842076A DE19842076A1 DE 19842076 A1 DE19842076 A1 DE 19842076A1 DE 1998142076 DE1998142076 DE 1998142076 DE 19842076 A DE19842076 A DE 19842076A DE 19842076 A1 DE19842076 A1 DE 19842076A1
- Authority
- DE
- Germany
- Prior art keywords
- cable
- casing
- convection
- cable system
- thermally insulating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G9/00—Installations of electric cables or lines in or on the ground or water
- H02G9/02—Installations of electric cables or lines in or on the ground or water laid directly in or on the ground, river-bed or sea-bottom; Coverings therefor, e.g. tile
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G9/00—Installations of electric cables or lines in or on the ground or water
Landscapes
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
Description
Die Erfindung betrifft eine unterirdische Kabelanlage.The invention relates to an underground cable system.
Starkstromkabel erwärmen durch ihre Verlustleistung ihre unmittelbare Umgebung. Es ist bei unterirdischen Kabelanlagen in der öffentlichen Diskussion die Forderung aufgekom men, die Aufwärmung des umgebenden Bodens durch das Kabel zu begrenzen. Eine Be grenzung der Aufwärmung der Umgebung bedingt eine Einschränkung der Leistung der Stromübertragung. Die Bedingung für ökologische Zulässigkeit der Bodenerwärmung (ökologischer Punkt) wird zur Zeit bei einer Temperaturerhöhung unter 5 K über der durch schnittlichen Temperatur im Abstand von 3 Metern vom Kabel (als Zylinder) diskutiert.Power cables heat their immediate surroundings through their power loss. It is in the case of underground cable systems in public discussion the demand arose men to limit the warming of the surrounding soil by the cable. A Be Limiting the warming up of the environment results in a limitation of the performance of the Power transmission. The condition for ecological permissibility of soil warming (ecological point) is currently at a temperature increase below 5 K above the Average temperature at a distance of 3 meters from the cable (as a cylinder) discussed.
Es ist Aufgabe der Erfindung, eine solche Verbesserung von unterirdischen Kabelanlagen vorzuschlagen, die zu einer Verringerung der thermischen Belastung der Kabelumgebung führt.It is an object of the invention to improve such underground cable systems propose a reduction in the thermal load on the cable environment leads.
Die Lösung wird in den Merkmalen des Hauptanspruchs wiedergegeben. Weitergehende Ausgestaltungen sind in den Unteransprüchen zu finden.The solution is given in the features of the main claim. More extensive Refinements can be found in the subclaims.
Nach der Erfindung wird vorgeschlagen, das Starkstromkabel auf mindestens einem Teil seiner Verlegestrecke mit einer thermisch isolierenden Hülle zu umgeben und unter der Hülle die Verlustwärme des Starkstromkabels mit einem flüssigen oder gasförmigen Kühl medium abgeführt wird.According to the invention it is proposed that the power cable on at least one part to surround its laying line with a thermally insulating covering and under the Cover the heat loss of the power cable with a liquid or gaseous cooling medium is discharged.
Eine sehr einfache Maßnahme ist, die Umgebungsluft des Kabels in Bewegung zu verset zen, die bewegte Luft auch in Austausch mit der Außenluft kommen zu lassen und dadurch einen Ventilationseffekt zu erzielen. Eine solche Maßnahme läßt sich ohne Zwangsbewe gung der Luft realisieren.A very simple measure is to set the ambient air of the cable in motion zen to let the moving air also come into exchange with the outside air and thereby to achieve a ventilation effect. Such a measure can be done without compulsory evidence realizing the air.
Die Kühlung durch Luft ist am einfachsten dort zu realisieren, wo das Kabel schon in Tun neln oder ähnlichen Hohlräumen verlegt ist oder verlegt wird. Ansonsten kann jede bekann te Art von Kabelkühlung eingesetzt werden, bis hin zu parallel geführten Kühlrohren mit flüssigem Kühlmedium. Cooling with air is easiest to implement where the cable is already in action n or similar cavities is or is being laid. Otherwise everyone can get acquainted te type of cable cooling can be used, right down to parallel cooling tubes liquid cooling medium.
Der Wert der Isolation sollte abhängig von den Abschnitten der Verlegestrecke so gewählt werden, daß die geforderte Übertragungsleistung vorhanden bleibt. Als Materialien sind in einfachen Fällen geschäumte Kunststoffe einsetzbar. Hier dürften Materialdicken von 10 cm ausreichen, um einen Wärmewiderstand von 5 bis 30 K m/Watt einzustellen. Bei extremen Bedingungen - möglicherweise auch nur auf kurzen Strecken - können höhere Isolations werte richtig sein. Zur Erzielung höchster thermischer Isolation stehen unter dem Stichwort "Superisolation" dem Fachmann bekannte Materialien und Methoden zur Verfügung. Eine zusätzliche Maßnahme kann darin bestehen, die isolierende Hülle innen mit einer IR-reflektierenden Schicht auszukleiden.The value of the insulation should be chosen depending on the sections of the route be that the required transmission power remains available. As materials are in foamed plastics can be used in simple cases. Material thicknesses of 10 cm are likely here are sufficient to set a thermal resistance of 5 to 30 K m / watt. In extreme Conditions - possibly even over short distances - can result in higher insulation values are correct. To achieve the highest thermal insulation are under the keyword "Super insulation" materials and methods known to those skilled in the art are available. A additional measure can consist in lining the inside of the insulating sheath with an IR-reflecting layer.
Als Ausgestaltung der Erfindung wird vorgeschlagen, die Isolation so vorzunehmen, daß der Wärmewiderstand der isolierenden Hülle in Fließrichtung des Kühlmediums zunimmt. Die hat den Vorteil, daß nicht stärker isoliert wird, als nach den Anforderungen nötig.As an embodiment of the invention, it is proposed to carry out the insulation in such a way that the thermal resistance of the insulating sheath increases in the direction of flow of the cooling medium. This has the advantage that it is not insulated more than is necessary according to the requirements.
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1998142076 DE19842076A1 (en) | 1998-09-15 | 1998-09-15 | Cable system for underground high current cable has thermally insulating cable casing over at least part of cable run, and loss heat is carried away beneath casing by convection or forced cooling |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1998142076 DE19842076A1 (en) | 1998-09-15 | 1998-09-15 | Cable system for underground high current cable has thermally insulating cable casing over at least part of cable run, and loss heat is carried away beneath casing by convection or forced cooling |
Publications (1)
Publication Number | Publication Date |
---|---|
DE19842076A1 true DE19842076A1 (en) | 2000-05-04 |
Family
ID=7880942
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1998142076 Withdrawn DE19842076A1 (en) | 1998-09-15 | 1998-09-15 | Cable system for underground high current cable has thermally insulating cable casing over at least part of cable run, and loss heat is carried away beneath casing by convection or forced cooling |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE19842076A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2680390A3 (en) * | 2012-06-25 | 2014-08-20 | RWE Innogy GmbH | Method for current control |
DE102014015776A1 (en) | 2014-10-27 | 2016-04-28 | nkt cables GmbH & Co.KG | Cable cooling system for buried high and extra high voltage cables |
DE102015211722A1 (en) * | 2015-06-24 | 2016-12-29 | Siemens Aktiengesellschaft | Conduit module for a buried high voltage power line, power line with line modules and method of making the line modules |
DE102019131475A1 (en) * | 2019-11-21 | 2021-05-27 | TenneT TSO GmbH | Method for current regulation of an energy system |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2554904A1 (en) * | 1975-12-06 | 1977-06-16 | Felten & Guilleaume Ag | Water cooled HV cable with thermal insulation - has controlled temperature distribution related to thickness and resistance |
DE3331498A1 (en) * | 1983-09-01 | 1985-03-21 | Linde Ag, 6200 Wiesbaden | High-voltage line |
DE19501332A1 (en) * | 1995-01-18 | 1996-07-25 | Alcatel Kabel Ag | Cooling coaxial system like superconducting cable |
-
1998
- 1998-09-15 DE DE1998142076 patent/DE19842076A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2554904A1 (en) * | 1975-12-06 | 1977-06-16 | Felten & Guilleaume Ag | Water cooled HV cable with thermal insulation - has controlled temperature distribution related to thickness and resistance |
DE3331498A1 (en) * | 1983-09-01 | 1985-03-21 | Linde Ag, 6200 Wiesbaden | High-voltage line |
DE19501332A1 (en) * | 1995-01-18 | 1996-07-25 | Alcatel Kabel Ag | Cooling coaxial system like superconducting cable |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2680390A3 (en) * | 2012-06-25 | 2014-08-20 | RWE Innogy GmbH | Method for current control |
EP2680390B1 (en) | 2012-06-25 | 2016-07-13 | RWE Innogy GmbH | Method for current control |
DE102014015776A1 (en) | 2014-10-27 | 2016-04-28 | nkt cables GmbH & Co.KG | Cable cooling system for buried high and extra high voltage cables |
EP3016224A1 (en) | 2014-10-27 | 2016-05-04 | nkt cables GmbH & Co. KG | Cable cooling system for buried high and extra high voltage cable, in particular for high power cable systems |
DE102014015776B4 (en) * | 2014-10-27 | 2016-08-04 | nkt cables GmbH & Co.KG | Cable cooling system for buried high and extra high voltage cables |
DE102015211722A1 (en) * | 2015-06-24 | 2016-12-29 | Siemens Aktiengesellschaft | Conduit module for a buried high voltage power line, power line with line modules and method of making the line modules |
DE102019131475A1 (en) * | 2019-11-21 | 2021-05-27 | TenneT TSO GmbH | Method for current regulation of an energy system |
DE102019131475B4 (en) | 2019-11-21 | 2022-03-03 | TenneT TSO GmbH | Process for power control of an offshore wind energy system using a two-point controller with a hysteresis function |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
OP8 | Request for examination as to paragraph 44 patent law | ||
8130 | Withdrawal |